symptom of OSAHS (John, 1991) (Table 1). A score of 24 is the maximum a patient can get. A person with OSA who scores greater than 10 has a diagnosis of OSAHS, and is more likely to be at an increased risk of impaired neurological functioning (Redline, 2002). OSAHS has been associated with an increased risk of road traffic accidents (NICE, 2008).